[martinetd:9p-next 11/13] ERROR: modpost: "p9_fid_put" [fs/9p/9p.ko] undefined!

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/martinetd/linux.git 9p-next
head:   9bb9cdaaa704d542e2fca976fa17f80f769fc341
commit: 6334def2e0b55439c8d86b769b23c03fb79f8ec4 [11/13] 9p fid refcount: add p9_fid_get/put wrappers
config: i386-randconfig-a015 (https://download.01.org/0day-ci/archive/20220612/202206122057.RBESqurT-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6466c9abf3674bade1f6ee859f24ebc7aaf9cd88)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/martinetd/linux/commit/6334def2e0b55439c8d86b769b23c03fb79f8ec4
        git remote add martinetd https://github.com/martinetd/linux.git
        git fetch --no-tags martinetd 9p-next
        git checkout 6334def2e0b55439c8d86b769b23c03fb79f8ec4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "p9_fid_put" [fs/9p/9p.ko] undefined!
>> ERROR: modpost: "p9_fid_get" [fs/9p/9p.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp